Hi Ralf,
Nothing like a bit of street entertainment like this to bring a city to life! You created a very good scene here with the band as a focal point, but still allowing a great view of the busy city streets beyond. It looks as if they are playing in the middle of the road? They seem to be well posited to allow the scene to have good light as well, a nice bonus for a darker nighttime scene.
All the best
Noel